An Olympic sprinter readies for a race. After the sound of the starting gun, she propels herself forward from the starting block and immediately grimaces in pain, grabbing for the back of her thigh. Within 48 hours she begins noticing extensive bruising on the back of her thigh extending into the back of the knee. She now has difficulty rising from a seated position and flexing her knee. Bending at the waist generates more pain. Which muscle is likely injured?
A. Gluteus maximus
B. Biceps femoris
C. Gastrocnemius
D. Iliopsoas
E. Popliteus
Answer: B
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Using the figure above, identify the labeled part.
1. Label A: ______________________________
2. Label B: ______________________________
3. Label C: ______________________________
4. Label D: ______________________________
5. Label E: ______________________________
6. Label F: ______________________________
7. Label G: ______________________________
The influence of CO2 and acid on the release of O2 from hemoglobin is known as the:
a. Frank effect b. Bohr effect c. Fick's constant d. Boyle's law e. dissociation curve
All body cells have a single, centralized nucleus.
Answer the following statement true (T) or false (F)
Depolarization of the nerve cell membrane occurs when there is a rapid influx (inflow) of
A. potassium ions. B. chloride ions. C. calcium ions. D. sodium ions. E. proteins.